And use it to hunt down a tricky ref issue.  We were creating more "static constants"
during shutdown.

Rather than trying to avoid them or to support them, just break
them on-demand if they come up.

add parser module

main motivation for this is that old versions of pytest use this module
in additon enable some cpython test we pass and add all shared libraries we generate to CMakeList.txt

and add float() and str() param names
In addition noticed that we did not run one of our small numpy tests

This fixes infinite recursion bugs when C extensions inherit from
these built-in types where the C extension allocation function calls
the base tp_new, which does an attribute lookup, which finds the
C extension allocation function again.

wip -- tricky merge